release.yaml

name: Release

on:
  push:
    tags:
      - 'v*'

jobs:
  goreleaser:
    runs-on: ubuntu-22.04
    permissions:
      contents: write # To add assets to a release.
    outputs:
      hashes: ${{ steps.hash.outputs.hashes }}
    steps:
      - name: Checkout
        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
        with:
          fetch-depth: 0

      - name: Fetch all tags
        run: git fetch --force --tags

      - name: Setup Go
        uses: actions/setup-go@4d34df0c2316fe8122ab82dc22947d607c0c91f9 # v4.0.0
        with:
          go-version: '1.21'
          check-latest: true

      - name: Run GoReleaser
        id: run-goreleaser
        uses: goreleaser/goreleaser-action@f82d6c1c344bcacabba2c841718984797f664a6b # v4.2.0
        with:
          distribution: goreleaser
          version: latest
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          
      - name: Generate subject
        id: hash
        env:
          ARTIFACTS: "${{ steps.run-goreleaser.outputs.artifacts }}"
        run: |
          set -euo pipefail

          checksum_file=$(echo "$ARTIFACTS" | jq -r '.[] | select (.type=="Checksum") | .path')
          echo "hashes=$(cat $checksum_file | base64 -w0)" >> "$GITHUB_OUTPUT"
  
  provenance-for-binaries:
    needs: [goreleaser]
    permissions:
      actions: read # To read the workflow path.
      id-token: write # To sign the provenance.
      contents: write # To add assets to a release.
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.6.0
    with:
      base64-subjects: "${{ needs.goreleaser.outputs.hashes }}"
      upload-assets: true # upload to a new release
  
  verification:
    needs: [goreleaser, provenance-for-binaries]
    runs-on: ubuntu-latest
    permissions: read-all
    steps:
      - name: Install the verifier
        uses: slsa-framework/slsa-verifier/actions/installer@v2.3.0

      - name: Download assets
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PROVENANCE: "${{ needs.provenance-for-binaries.outputs.provenance-name }}"
        run: |
          set -euo pipefail
          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "*.tar.gz"
          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "*.zip"
          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "$PROVENANCE"
      
      - name: Verify assets
        env:
          CHECKSUMS: ${{ needs.goreleaser.outputs.hashes }}
          PROVENANCE: "${{ needs.provenance-for-binaries.outputs.provenance-name }}"
        run: |
          set -euo pipefail
          checksums=$(echo "$CHECKSUMS" | base64 -d)
          while read -r line; do
              fn=$(echo $line | cut -d ' ' -f2)
              echo "Verifying $fn"
              slsa-verifier verify-artifact --provenance-path "$PROVENANCE" \
                                            --source-uri "github.com/$GITHUB_REPOSITORY" \
                                            --source-tag "$GITHUB_REF_NAME" \
                                            "$fn"
          done <<<"$checksums"

  docker-configure:
    runs-on: ubuntu-22.04
    outputs:
      release: ${{ steps.vars.outputs.release }}
      commit: ${{ steps.vars.outputs.commit }}
      build_date: ${{ steps.vars.outputs.build_date }}
    steps:
      - name: Set version fields
        id: vars
        run: |
          echo "release=$(echo $GITHUB_REF | cut -d / -f 3 |  sed 's/^v//')" >> $GITHUB_OUTPUT
          echo "commit=${{ github.sha }}" >> $GITHUB_OUTPUT
          echo "build_date=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
  
  docker-image:
    needs: docker-configure
    uses: ./.github/workflows/docker-image.yaml
    secrets: inherit
    permissions:
      contents: read
      packages: write
      id-token: write # needed for signing the images with GitHub OIDC Token
    with:
      release: ${{ needs.docker-configure.outputs.release }}
      commit: ${{ needs.docker-configure.outputs.commit }}
      build_date: ${{ needs.docker-configure.outputs.build_date }}
      sign: true

  provenance-for-images:
    needs: [docker-configure, docker-image]
    permissions:
      actions: read # for detecting the Github Actions environment.
      id-token: write # for creating OIDC tokens for signing.
      packages: write # for uploading attestations.
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@v1.9.0
    with:
      image: docker.io/falcosecurity/falcoctl
      # The image digest is used to prevent TOCTOU issues.
      # This is an output of the docker/build-push-action
      # See: https://github.com/slsa-framework/slsa-verifier#toctou-attacks
      digest: ${{ needs.docker-image.outputs.digest }}
    secrets:
      registry-username: ${{ secrets.DOCKERHUB_USER }}
      registry-password: ${{ secrets.DOCKERHUB_SECRET }}